Iron Lung is a 2026 American independent science fiction horror film starring writer, editor, and director Mark Fischbach in his feature-length directorial debut. It is based on the 2022 video game by David Szymanski. It also stars Caroline Kaplan, Troy Baker, Elsie Lovelock, Elle LaMont, Mick Lauer, Seán McLoughlin (Jacksepticeye), Isaac McKee and Alanah Pearce. The plot follows a convict (Markiplier) who is forced to pilot a submarine through an ocean of blood on a desolate moon following an apocalyptic event known as the "Quiet Rapture" that caused all the stars and habitable planets along with their human inhabitants to disappear without warning.

Summary from Wikipedia (CC BY-SA).